Valve device for toilet flush tanks



Jan. 20, 1959 T. E; cROCKETT 2,869,578

VALVE DEVICE FOR TOILET FLUSH TANKS Filed Dec.A 4, 1956 TIE-..1

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/4 ATTORNEY United States Patent O VALVE DEVICE FOR TOILET FLUSH TANKS Thomas E. Crockett, `Corpus Christi, Tex. Application December 4, 1956, Serial No. 626,261

1 Claim. (Cl. 137-444) VMy invention relates to oat operated valves for use in toilet flush tanks. .i i

An important object of the invention is to'provide a valve of the above-mentioned character which is extremely simple in construction, cheap to manufacture and easy to install.

A further object of the invention is to Aprovide a valve `element which is operated Vby the loat, to control the entrance of the water into the tank, and which will automatically operate as a check valve to prevent back siphonage of the water into the supply line when a vacuum occurs in such line.

A further object of the invention is to provide a valve device having a part which carries the float lever and which part is readily removable so that a new valve element may be installed, when desired. l

Other objects and advantages of the invention will be apparent during the course of the following description.

ln the accompanying drawings forming a part of this application and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a central vertical longitudinal section through the valve device, showing the oat raised and the valve element seated.

Figure 2 is a vertical section taken on line l2--2 of Figure l.

Figure 3 is a central vertical longitudinal section through the valve device, showing the float lowered and the valve element unseated.

Figure 4 is a similar view, showing the tloat lowered and `the valve element seated, due to the presence of a vacuum in the supply pipe.

Figure 5 is a horizontal section taken on line 5-5 of Figure 3.

ln the drawings, where for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates a flush tank of conventional construction, having a bottom 11. This tank is equipped with the `usual manually operated outlet valve, not shown. The tank and outlet valve may be of the type shown in my Patent 2,682,888.

The valve comprises a preferably cylindrical vertical casing 12, having 4outlet `openings 13 in its side.` The casing 12 is provided with a depending cylindrical tubular extension 14, forming a shoulder 1S with the casing. The tubular extension 14 has exterior screw-threads.

The tubular extension 14 is passed through an opening 16 formed in the bottom 11, and a washer 17 is provided, engaging beneath the shoulder 15 and engaging a tapered gasket 18, engaging in theopening 16 to form a water tight joint. A ringnut A19 has screwthreadedengagement with the tubular extension 14 and clamps packing 20 against the bottom 11. It isv thus seen that thel valve casing 12 is mounted upon the bottom 11 of the flush tank, but the invention is not restricted to this particular arrangement, as the valve 2,869,578 Patented Jan. 20, 1959 rice casing may be elevated above the bottom 11. The sup ply line is connected with the tubular extension 14.

The valve casing 12, which is preferably cylindrical `and vertical, as stated, is provided with a horizontal web 21, integral therewith having a vertical water discharge opening 22. The upper face of the web 21 constitutes a horizontal valve seat, arranged atan elevation slightly below the openings 13. The numeral 23 designates a flat disc valve element, which is'cylindrical and arranged within the valve casing 12, to move freely.

ably receiving a plunger 27, which is adapted to engage.

the top of the disc valve element 23 at its center. The plunger 27 extends above the cap 24.

' Preferably formed integral with the cap 24 and arranged above thesame is a pair of spaced knuckles or flanges 28, extending above the plunger 27. Arranged between the knuckles 28 is a vertically swinging linger or lever 29, pivotally connected with the knuckles by a pin 30. This finger or lever has a rounded edge or cam face 31, to contact with the rounded end 32 of the plunger 27. VFormed integral with the finger or lever 29 is a tubular coupling 33, having a rod or lever 34 rigidly mounted therein, and this rod carries at its free end a float 35.

The operation of the device is as follows:

When theV tank 10 is flushed in the usual manner, the float 35 drops to the lowered position and the linger or lever 29 has its free end swung upwardly. This linger is therefore moved above the upper end of the plunger 27, which isthen free to rise. The pressure of the water in the tubular extension 14 acts upon the disc valve element 23, unseating it and shifting it to the raised position, Figure 3, and the water then passes through openings 22 and 13 into the tank 10. As the tank lls, the float 35 rises and the linger or lever 29 is brought into engagement with the plunger 27 and the plunger seats the valve element 23, cutting off the supply of water to the tank, Figure 1. In the event of the presence of a vacuum in the pipe line and tubular extension 14, the valve element 23 will gravitate to the seated position, Figure 4, whereby the water `valve casing 12, the plunger 27 being removable withV the cap, the disc valve element may be readily removed and a new disc valve element substituted for the worn disc valve element. Furthermore, since the linger or lever 29 and rod 34 are carried by the cap 24 and not by the casing 12, these elements may be readily en1- ployed to rotate the cap when it is desired to remove and replace the same.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of my invention or the scope of the `subjoined claim.

Having thus described my invention, I claim:

A float operated valve device for toilet flush tanks comprising, a valve'casing( which is vertieally'arr-angejd and extends through an opening in Athcizbotto'm ofA the tlush tank and having its upper end projecting above the bottom, the lower end vof4 the valve casing'being adapted for connection with a water supply pipe, means to securely mount the valve casingl uponv said bottoni, said valve casing having its top open, a substantialiy horizontal web mounted within the valve casing near andv spaced from the top of the valve casing, said web vhaving an `opening formed therein, said web extending valve being'adapted to cover the opening in the web and to only partlycoverthe openings in the side of the casing, a cap ,having screw-threaded engagement with the top ofthe casing to be removed therefrom, said cap having a vertical opening formed-therein; a mov-y able vertical plunger removably mounted within the vertical opening of the cap and having its lower end arranged to contact with the top of the disc valve and free from connection therewith and having its upper end extending above the cap and provided with an in! clined surface, spaced verticalzknuckles arranged above the capp and t rigidly secured thereto,y a oat, operated,

levend'evice, a'horizontal pin lpivotally connecting the float operatedlever device so thatY such device may swing verticallywith relation to the cap,4 said `device being rigidly connected withl the cap'whein the device is moved horizontally to .thereby turn` the cap with relation to the casing, the free end of the lever device being arranged to contact with the upper inclined face of the upper end of the plunger and free from connection therewith.

References Citedin the le of this patent UNITED STATES PATENTS `505,272v Kelly.. Sept.v 19, 1893 1,368,088 Wright Feb. 8,; 1921 2,324,084 Horner July 13, 1943 2,329,337 Criss et al Sept,v 14, 1943 

